Mold



C. SIVERTSON.

MOLD.

APPLICATION FILED DEC. I3.'1920.

Patented Oct. 3, 1922.

2 SHEETS-SHEET l.

m 9 ym C. SIVERTSOM MOLD.

APPLlCATiON FILED DEC. 13. 1920.

1922. VZSHEETS-SHEET 2.

Patented Oct. 3

Patented (Dot. 3, 1922.

Lew:

CHRISTIAN SIVER'ISON, OF WEST DULUTH, MINNESOTA.

Mono.

' Application filed December 13,1920. Serial No. 30,230.

T 0 all whom it may concern.

Be it known that I, CHRISTIAN Srwenrson, a citizen of the United States, residing at W est Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Molds; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates toimprovements in molds, and it has more particular reference to a device of this class which is especially designed for making plastic shingles.

The principal object of the invention to provide a mold which is an improvement on similar devices for accomplishing the same result, this mold being of extreme simplicity and durability, highly effective in use, and very inexpensive to manufacture.

Another object of the invention is to provide a mold which is of such construction and shape that it will form'a shingle having six edges, two of which are relatively short, are inclined and disposed at the points opposite one another, the mold also including means for forming an abrupt shoulder at the connecting point of one of the long and. short edges. Thus, a shingle is, provided which can be placed in position on-a roof by inexperienced persons.

A further object of the invention is to provide a mold embodying a stationary section constituting the bottom and one of the end walls, and a removable section which has pivotal connecjtionwith the bottom and constitutes the opposed end wall, both of these sections being provided with spaced alined grooves for reception of partitions, whereby a plurality of shingles may be formed at each operation and the shingles and partitions readily removedwith great ease and facility.

A still further object of the invention is to provide a mold embodying the aforesaid construction together with pairs of reinforcing ribs, which extend beyond the respective sections to which they are connected and provide novel disconnectible hinge means for permitting separation of the sec-' tions. i Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawingsforming a part of this specification and in which like numerals are employed to designate like Figure L is a perspective view showing the hopper removed and sections of the mold separated to permit partitions to be removed.

Figure 5 is a top plan view of several shingles showing the manner inwhich they are placed together.

Referring to the drawings, wherein the preferred embodiment of the invention is clearly illustrated, it will be seen that the numeral 1 designates thestationary section which includes the bottom 2 and one of the vertical end walls It is to be noted, that the portion which connects the bottom with the end wall is inclined for a purpose to be hereinafter set forth. The other section, which is movable, is designated by the numeral 5 and this section is disposed opposite the walls 3 and land constitutes the remain.- ing end wall. wall 5 will disclose the fact that it is quickly detachable from the bottom 2 and has its upper portion inclined toward the wall 3 as indicated at 6. With this construction and arrangement, it will be [seen that a mold is formed which is open at its top and at opposite sides, and it is so shaped that when the shingle is formed, the latter will be equipped with six sides, two of which are inclined, and relatively short with re- Careful examination of the spect to the remaining sides; these two short sides being disposed at the points opposite one another ,It is also to be stated, as before intimated, that with this particular hindof a mold, each of the shingles will be provided with a shoulder formed by the vertical free edge 7 of the end wall 5 As is the case with other molds of this class, it is my desire to form a plurality of shingles at each operation. To this end, I provide the sections 1 and 5 with a plurality of closed spaced interiorly disposed -r'ooves 8 and in these grooves I place a plilrality of partitions 9 between which the plastic material. in the liquid farm is poured. In

- view of the peculiar internai outline or sh ape at right angles to said long edge. shingles of this construction, it will be very of the mold, it is to be noted that the partitions are shaped to fit between the sections of the mold.

To facilitate the removal and insertion of the partitions and also to facilitate ready and easy removal. of the shingles from the mold, I so connect the end wall 5 with the bottom 2 that this end wall may be swung down to the position shown. Any means may be employed for permitting this, how ever, I prefer to make use of the construction shown. To this end, it will be seenthat each of the sections 1 and 5 is provided with a pair of spaced reinforcing ribs 10 and 11 respectively, these ribs being arranged on the exterior of the sections so as not to interfere with the formation of the shingles and at the same time to provide novel means for supporting the mold and increasing the life of the latter. Going into more detail on this construction, I may add that only thehorizontal portion of the ribs 10 serve asthe above referred to means for supporting the mold on the ground, and in view of the fact that they retainthe mold in spaced relation from the ground, it will be seen that the life of the latter will be increased. it is to be noted that the lower ends of the ribs 11 and the adjacent ends of the ribs 1.0 are extended beyond the sections by which they are carried, the ribs 11 being provided at this point with notches 12 while the corresponding portions of the remaining ribs carry a pivot pin 13 receivable in these notches. This construction and arrangement permits the section 5 to be swung to a position to facilitate the insertion and removal of the partitions and permits this section to be disconnected whenever necessary or desired. For the purpose of retaining the movable end wall5 in operative position, I make use of a pair of notched latch arms 14: which are carried by the stationary sections, the notches being co-operative with pivotal studs 15 on the vertical edges of the other section. Of course, when the device is in use, a hopper 16 of any suitable construction will be employed to insure quick filling of the spaces between the partitions with concrete or cement. 7 i

In Figure 5 I have shown several of the shingles as formed with a mold of this con struction. Referring to these shingles, it will be seen that each one includes six edges or sides, those designated by 17 being disposed opposite one another, inclined, and shorter than the remaining ones 18. It is also to be noted that each shingle is provided with a shoulder 19 formed at the connecting point ofone of the long edges and the adjacent short edges, this shoulder being disposed With easy for inexperienced persons to arrange gles may be obtained and when once the shingle is fixed in position, it will very rarely slip out of place, even before it is nailed or secured to the roof.

In view of the foregoing detailed description of this improved mold taken in connec tion with the accompanying drawings, it is thought unnecessary to describe the manner of using the same or themanner of making use of the improved shingles, therefore, a more lengthy description is unnecessary.

From the foregoing description, it will be seen that I have devised an extremely simple and highly efi'ective mold. which is of such construction and arrangement that it will form entirely new and novel shingles which may be placed in position by inexperienced persons. Furthermore, the removable hinged section of the mold will insure quick and easy removal and insertion of the partitions and quick removal of the shingles after the latter have become hardened. The mold is very compact andlight in weight and is highly eflicient in every way. These and other advantages and features of the device, have, no doubt, become apparent from the foregoing description. 1

Since probably the best results maybe obtained with the construction and arrangement shown and described, this construction and arrangement is taken as the preferred embodiment of the invention. However, I wish it to be understood that variousminor changes in the shape, size, and arrangement of'parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

I claim: f

1. A mold comprising a stationary section having a bottom, a vertical end wall and a lower corner wall extending diagonally from the bottom to the lower end of the end wall, a movable section including a portion hingedly connected with the bottom and forming a vertical end wall for the mold, and a section extending diagonally therefrom to provide a diagonally disposed upper corner wall extending parallel to the lower corner wall and havingits free end cut to extend parallel to the vertical end walland providing a reduced' neck at the upper end of the mold, and means for releasably holding the'movable section in an operative position.

. 2. The structure of claim 1, and partitions positioned vertically within the mold and extending between the bottom, end walls and upper and lower corner walls and conform- .ing to the contour of the spaced enclosed thereby whereby a plurality of plastic shingles may be formed with each provided with tapered upper and lower end portions, and

relatively short side edges intermediate its length and an outstanding shoulder extending from the upper end of one side edge to the tapered upper end portion of the shingle.

3. The structure of claim 1 having the sections of the mold provided With longitudinally extending spaced bracing strips having extended end portions, and a pivot rod carried by the extended end portions of the 10 strips of one section, the extended end portions of the strips of the other section being "provided With notches receiving the rod to pivotally connectthe strips of the sections and hingedly mount the movable section for movement into and out of an operative position and permit removal of the movable section from, the rod.

In testimony whereof I have hereunto set In hand.

CHRISTIAN SIVERTSON. 

